在第四讲中,我们已经讲过:假定有一种新的技术最适于测定某一新药的释放度,也不一定就能被采用,因为各国在释放仪上的研究,已经积累了大量的经验,掌握了各种影响因素,已不允许任意去发展其它完全崭新的释放度方法。对某一新剂型,除非有充分的理由证明现有的法定方法不足以衡量它的药效,试验人员只能选择药典所规定的方法,或如第三及第四讲中所提的加以某些修改, In the fourth lecture, we have already said that it is not necessarily possible to assume that a new technique is most suitable for determining the release of a new drug because many countries have accumulated a large amount of Experience, mastered a variety of influencing factors, has not allowed arbitrary development of other completely new release method. For a new dosage form, the experimenter can only choose the method prescribed by the Pharmacopoeia or add some as mentioned in the third and fourth lectures unless there is ample justification for the existing statutory method to measure its efficacy Some changes,